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You are observing a 4-particle system. The net external torque on the system is 20Nm. What is the net internal torque on the system?
Please show how the answer is obtained.
A lump of mass 1.0 kg falls on it and sticks to the surface at a distance 0.7 m from the center. a) calculate the new angular speed of the disc b) if the lump gets unstuck and rolls of the disc.
A "railgun" accelerates a projectile using an electric current circulating through two parallel rails and the projectile itself. What is the impulse on the projectile
A 25 kg child on a 2.0 m swing is released from rest when the swing supports make the angle of 30.0 degrees with the vertical.
A flat coil of wire is used with an LC-tuned circuit as a receiving antenna. The coil has a radius of 0.35 m and consists of 480 turns. find the magnitude of the average emf induced in the antenna
after flying for 15 min in a wind blowing 42 kmh at an angle of 34deg south of east an airplane pilot is over a town
A dolphin locatedin sea water at a temperature of 25°C emits a sound directedtoward the bottom of the ocean 200 mbelow. How much time passes before it hears an echo
What factors do you believe determine the coefficient of friction - Give examples of materials with a low coefficient of friction and a high coefficient of friction
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. Find the his and her initial acceleration
question an uniform electric field of magnitude e 100 nc is oriented along the positive y-axis. what is the magnitude
An arrow is shot with a speed of 18.5 m/s at an angle of 50 degrees from the horizontal. What are the respective horizontal and vertical component of the initial velocity of the arrow?
The de Broglie relation applies to all "particles," not just electrons and photons. Calculate the wavelength of a neutron whose kinetic energy is 1 eV.
A solid cylinder has a radius of 0.110m and a length of 0.21m.Its rotational inertia regarding its rotational axis is 0.0200 kg m^2.A string is wound around the cylinder and pulled by a force of1.00N. What is the angular acceleration of the cylinder?
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